US5041006A - Insulation displacement contact element - Google Patents

Insulation displacement contact element Download PDF

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Publication number
US5041006A
US5041006A US07/525,739 US52573990A US5041006A US 5041006 A US5041006 A US 5041006A US 52573990 A US52573990 A US 52573990A US 5041006 A US5041006 A US 5041006A
Authority
US
United States
Prior art keywords
parallel
projection
flat sheet
rectangular part
contact element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/525,739
Inventor
Albertus Van Zanten
Johannes M. B. Van Woensel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCI Americas Technology LLC
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Assigned to E.I. DU PONT DE NEMOURS AND COMPANY reassignment E.I. DU PONT DE NEMOURS AND COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VAN WOENSEL, JOHANNES M. B., VAN ZANTEN, ALBERTUS
Application granted granted Critical
Publication of US5041006A publication Critical patent/US5041006A/en
Assigned to CHEMICAL BANK reassignment CHEMICAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BERG TECHNOLOGY, INC.
Assigned to BERG TECHNOLOGY, INC. reassignment BERG TECHNOLOGY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: E.I. DU PONT DE NEMOURS AND COMPANY
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/2466—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the contact members having a channel-shaped part, the opposite sidewalls of which comprise insulation-cutting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing

Definitions

  • This invention relates to a connector contact element and in particular to an insulation displacement contact element.
  • German Patent Specification No. 2,653,593 shows a contact element which is formed from a flat sheet for relatively complex shape.
  • the slits for insulation displacement contact of the conductor extend in the same direction as the resilient lips of the clamp-type fastening part so that the accommodated conductor is at right angles to the lengthwise direction of the contact element.
  • the object of the present invention is to provide an insulation displacement contact element which is formed from a simple flat sheet and in which the slits are arranged in such a way that the accommodated conductor extends in the lengthwise direction of the element.
  • the contact element according to the invention is folded from a flat sheet which has a generally rectangular part and which has a lip projecting from one of its sides terminating in a cutting slit at its end and an angular piece also projecting from this one side of the rectangular part and extending essentially parallel to the projecting lip.
  • This angular piece includes a portion which is at right angles thereto and faces away from said lip and which terminates in a second cutting slit at its end.
  • the rectangular part of the flat sheet is folded to form a rectangular channel along a first pair of fold lines at a distance from each other and running virtually parallel to each other, so that one of the sides of said channel extends as the projecting lip and the bottom of the channel extends as the angular piece.
  • the angular piece is folded inwards through a second fold line standing at right angles to the first pair of fold lines, in such a way that the part with the slit rests on the projecting lip extending from a side of the channel, and the end part of the extending lip with the slit formed therein is folded inwards essentially through a right angle through a third fold line running parallel to the second fold line.
  • a pair of parallel lip-shaped parts extend from the other side of the rectangular part.
  • the lip-shaped parts are spaced apart and separated by a rectangular recess. After folding of the flat sheet to form a rectangular channel, the sides of said channel extend by said lip-type parts which at their ends form a clamp-type fastening part of the contact element made up of two resilient contact lips.
  • FIG. 1 shows a flat sheet from which the contact element according to the invention is folded
  • FIG. 2 shows the contact element in perspective.
  • the flat sheet has a generally rectangular part 1, in which a generally rectangular recess 2 is provided at one side so that two lip-type parts 3 and 4 are formed.
  • a projecting lip 5 is present, with a slit 6 disposed in the end face thereof.
  • This side of the rectangular part 1 also has formed in it an angular piece 7, with a part 7' connected to the rectangular part 1, and a part 7" standing at right angles thereto, in which a second slit 8 at right angle is disposed.
  • the rectangular part 1 also contains a recess 9.
  • This recess is in the form of two slits 9' spaced apart and running parallel to each other, and a triangular part 9" situated between them.
  • the flat sheet is bent along the fold lines a and b to form a rectangular channel, the parts of the rectangular part 1 situated on either side of the triangular part 9" of the recess 9 forming raised, generally trapezoidal projections 1'.
  • the latter are used for fastening the contact element in a housing, which is not shown.
  • the angular piece 7 is also folded inwards along the fold line c, so that he part 7" with the slit 8 formed therein comes to rest on the projecting lip 5.
  • Reference number 10 shows a conductor which is pressed into the slits 6 and 8. The edges of these slits cut through the insulation of the conductor until they come into contact with the conductive core. FIG. 2 thus shows clearly that the conductor 10 extends in the lengthwise direction of the contact element.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Dicing (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Weting (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

A contact element having a cutting section for insulation displacement connection of an insulated electrical conductor. The contact element being folded from a flat sheet of electrical conducting material, having a generally rectangular part which bears a lip projecting from one of its sides provided with a cutting slit in the end face and an angular piece having a part connected to said rectangular part and extending essentially parallel to said lip, and having a part which is at right angles thereto and faces away from said lip. The last mentioned part being provided with a further cutting slit in the end face. By appropriate folding of said flat sheet, a contact element being provided having a cutting section for side-piercing of an electrical conductor.

Description

BACKGROUND OF THE INVENTION
This invention relates to a connector contact element and in particular to an insulation displacement contact element.
Insulation displacement contact elements folded from flat metal sheets are known in the prior art. German Patent Specification No. 2,653,593, for example, shows a contact element which is formed from a flat sheet for relatively complex shape. The slits for insulation displacement contact of the conductor extend in the same direction as the resilient lips of the clamp-type fastening part so that the accommodated conductor is at right angles to the lengthwise direction of the contact element.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an insulation displacement contact element which is formed from a simple flat sheet and in which the slits are arranged in such a way that the accommodated conductor extends in the lengthwise direction of the element.
This object is achieved through the fact that the contact element according to the invention is folded from a flat sheet which has a generally rectangular part and which has a lip projecting from one of its sides terminating in a cutting slit at its end and an angular piece also projecting from this one side of the rectangular part and extending essentially parallel to the projecting lip. This angular piece includes a portion which is at right angles thereto and faces away from said lip and which terminates in a second cutting slit at its end. The rectangular part of the flat sheet is folded to form a rectangular channel along a first pair of fold lines at a distance from each other and running virtually parallel to each other, so that one of the sides of said channel extends as the projecting lip and the bottom of the channel extends as the angular piece. The angular piece is folded inwards through a second fold line standing at right angles to the first pair of fold lines, in such a way that the part with the slit rests on the projecting lip extending from a side of the channel, and the end part of the extending lip with the slit formed therein is folded inwards essentially through a right angle through a third fold line running parallel to the second fold line.
A pair of parallel lip-shaped parts extend from the other side of the rectangular part. The lip-shaped parts are spaced apart and separated by a rectangular recess. After folding of the flat sheet to form a rectangular channel, the sides of said channel extend by said lip-type parts which at their ends form a clamp-type fastening part of the contact element made up of two resilient contact lips.
The invention is explained in greater detail with reference to the drawing, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a flat sheet from which the contact element according to the invention is folded; and
FIG. 2 shows the contact element in perspective.
DETAILED DESCRIPTION OF THE EMBODIMENT
As shown in FIG. 1, the flat sheet has a generally rectangular part 1, in which a generally rectangular recess 2 is provided at one side so that two lip- type parts 3 and 4 are formed. At the opposite side of the rectangular part 1, a projecting lip 5 is present, with a slit 6 disposed in the end face thereof. This side of the rectangular part 1 also has formed in it an angular piece 7, with a part 7' connected to the rectangular part 1, and a part 7" standing at right angles thereto, in which a second slit 8 at right angle is disposed.
The rectangular part 1 also contains a recess 9. This recess is in the form of two slits 9' spaced apart and running parallel to each other, and a triangular part 9" situated between them.
As shown in FIG. 2, the flat sheet is bent along the fold lines a and b to form a rectangular channel, the parts of the rectangular part 1 situated on either side of the triangular part 9" of the recess 9 forming raised, generally trapezoidal projections 1'. The latter are used for fastening the contact element in a housing, which is not shown.
The angular piece 7 is also folded inwards along the fold line c, so that he part 7" with the slit 8 formed therein comes to rest on the projecting lip 5.
Finally, the end part of the projecting lip 5 is folded inwards round the fold line d. As a result, the slits 6 and 8 are disposed parallel to each other.
Reference number 10 shows a conductor which is pressed into the slits 6 and 8. The edges of these slits cut through the insulation of the conductor until they come into contact with the conductive core. FIG. 2 thus shows clearly that the conductor 10 extends in the lengthwise direction of the contact element.

Claims (5)

We claim:
1. A method for forming an insulation displacement contact element comprising the steps of:
forming a flat sheet of conductive material having a generally rectangular part with two lip members extending essentially parallel to one another from one side of the rectangular part and with two projections extending from an opening side of the rectangular part, one of said projections terminating in a first cutting slit extending in a direction parallel to said lip members, a second of said projections terminating in a second cutting slit extending in a direction perpendicular to the first cutting slit,
folding the flat sheet along a first lengthwise fold line whereby one of the lip members, a portion of the rectangular part and said one projection with said first cutting slit is perpendicular to the rest of the flat sheet,
folding the flat sheet along a second lengthwise fold line whereby the second of the lip members and another portion of the rectangular part is parallel to the first folded portion so that a rectangular channel is formed between the first two fold lines, the bottom of said channel containing the remaining unbent portion of said rectangular part and the second projection containing the second cutting slit, and
forming said first and second sets of cutting slits through approximately ninety degrees along third and fourth fold lines, respectively, which are both perpendicular to said first and second fold lines.
whereby said first and second cutting slits are spaced parallel to one another and extend in a direction perpendicular to said channel.
2. The method of claim 1 wherein a recess is formed in the center of the rectangular part, said recess formed of two slots spaced apart and parallel to each other and joined by a triangular part so that when the flat sheet is folded along the first and second fold lines, opposite sides of the triangular part of the recess will be raised upward to form parallel trapezoidal projections which may be used for fastening the contact element in a housing.
3. An insulation displacement contact element formed by the method of claim 1.
4. A cutting contact element formed by folding from a flat sheet and comprising two parallel lips projecting opposite each other, and a pair of parallel slits whose edges are adapted to cut through insulation of a conductor which is pressed into said slits until they come into contact with a conducting core of the conductor, said flat sheet having a generally rectangular part which has a first projection extending from one of side thereof terminating in a first of said cutting slits, and a second projection also extending from said one side of the rectangular part and extending essentially parallel to the first projection and terminating in a second of said cutting slits which is perpendicular to said second projection, the rectangular part of the flat sheet being folded to form a rectangular channel along two first fold lines at a distance from each other and running substantially parallel to each other so that one of the sides of said channel includes the first projection and the bottom of the channel includes the second projection, the second projection being folded inwards through a second fold line perpendicular to the first two fold lines in such a way that the second slit rest on the first projection extending along a side of the channel, and the termination of said first projection with said first slit being folded inwards essentially through a right angle at a third fold line running parallel to the second fold line so that the slits are parallel to one another.
5. The contact element of claim 4 wherein each of said pair of lips extend in opposite sides of said channel from an opening side of the rectangular part to form resilient contact lips.
US07/525,739 1989-06-09 1990-05-21 Insulation displacement contact element Expired - Fee Related US5041006A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL8901477A NL8901477A (en) 1989-06-09 1989-06-09 CUTTING CONTACT BODY.
NL8901477 1989-06-09
SG153994A SG153994G (en) 1989-06-09 1994-10-21 Method for forming a cutting contact element

Publications (1)

Publication Number Publication Date
US5041006A true US5041006A (en) 1991-08-20

Family

ID=26646538

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/525,739 Expired - Fee Related US5041006A (en) 1989-06-09 1990-05-21 Insulation displacement contact element

Country Status (11)

Country Link
US (1) US5041006A (en)
EP (1) EP0405630B1 (en)
JP (1) JP2875352B2 (en)
CN (1) CN1048124A (en)
AT (1) ATE111640T1 (en)
AU (1) AU624563B2 (en)
CA (1) CA2018106A1 (en)
DE (1) DE69012453T2 (en)
HK (1) HK145494A (en)
NL (1) NL8901477A (en)
SG (1) SG153994G (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269700A (en) * 1991-05-02 1993-12-14 E. I. Du Pont De Nemours And Company Insulation displacement contact terminal
US5643004A (en) * 1992-09-04 1997-07-01 Quante Aktiengesellschaft Electric connection contact in a single piece
US5743617A (en) * 1995-01-20 1998-04-28 Koito Manufacturing Co., Ltd. Vehicular lamp
US5769654A (en) * 1994-06-29 1998-06-23 Yazaki Corporation Press-connecting terminal
US5818142A (en) * 1995-07-27 1998-10-06 Black & Decker Inc. Motor pack armature support with brush holder assembly
US20170256868A1 (en) * 2012-02-07 2017-09-07 3M Innovative Properties Company Electrical connector contact terminal

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703520B1 (en) * 1993-04-02 1997-04-30 Francelco Sa Electrical connector module and method of mounting such a module.
US5655925A (en) * 1995-06-21 1997-08-12 Pon; Su-Chin Female plug
US6406324B1 (en) * 2001-03-13 2002-06-18 Tyco Electronics Corporation Insulation displacement connector terminal block
JP2003217700A (en) * 2002-01-24 2003-07-31 Auto Network Gijutsu Kenkyusho:Kk Crimp terminal and manufacturing method for it
NL1034401C2 (en) * 2007-09-18 2009-04-29 Albertus Van Zanten Phase-selective connection system.
US7794267B2 (en) 2008-08-06 2010-09-14 Tyco Electronics Corporation Card edge connector with IDC wire termination
JP6776085B2 (en) * 2016-10-05 2020-10-28 日本航空電子工業株式会社 connector
DE102017213064B4 (en) * 2017-07-28 2022-11-24 Robert Bosch Gmbh Electrical connector and connector system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558582A1 (en) * 1967-07-29 1970-04-09 Metallgesellschaft Ag Process for cooling hot sintered goods
DE2653593A1 (en) * 1975-11-25 1977-06-02 Du Pont MULTIPLE ELECTRICAL CONNECTING DEVICE AND METHOD FOR ASSEMBLING THE SAME WITH INSULATED WIRES TO ACHIEVE A PRE-PRODUCT AND DEVICE FOR PERFORMING THE METHOD
US4040705A (en) * 1976-04-12 1977-08-09 Amp Incorporated Coaxial ribbon cable connector
US4232927A (en) * 1979-03-16 1980-11-11 E. I. Du Pont De Nemours And Company Electrical connector
US4265504A (en) * 1979-09-04 1981-05-05 International Telephone And Telegraph Corporation Contact retention assembly
US4346955A (en) * 1977-12-28 1982-08-31 Souriau & Cie Self-stripping terminal for an electrical connector
EP0082697A2 (en) * 1981-12-19 1983-06-29 Nippon Acchakutanshi Seizo Kabushiki Kaisha Multi-contact connector
US4699441A (en) * 1984-09-14 1987-10-13 Amp Incorporated Electrical connector for stranded wires
EP0262775A1 (en) * 1986-09-30 1988-04-06 The Whitaker Corporation Electrical connector
US4840578A (en) * 1986-10-30 1989-06-20 Hirose Electric Co., Ltd. Electrical contact
EP0321285A1 (en) * 1987-12-17 1989-06-21 The Whitaker Corporation Bidirectional insulation displacement electrical contact terminal

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558582A1 (en) * 1967-07-29 1970-04-09 Metallgesellschaft Ag Process for cooling hot sintered goods
DE2653593A1 (en) * 1975-11-25 1977-06-02 Du Pont MULTIPLE ELECTRICAL CONNECTING DEVICE AND METHOD FOR ASSEMBLING THE SAME WITH INSULATED WIRES TO ACHIEVE A PRE-PRODUCT AND DEVICE FOR PERFORMING THE METHOD
US4040705A (en) * 1976-04-12 1977-08-09 Amp Incorporated Coaxial ribbon cable connector
US4346955A (en) * 1977-12-28 1982-08-31 Souriau & Cie Self-stripping terminal for an electrical connector
US4232927A (en) * 1979-03-16 1980-11-11 E. I. Du Pont De Nemours And Company Electrical connector
US4265504A (en) * 1979-09-04 1981-05-05 International Telephone And Telegraph Corporation Contact retention assembly
EP0082697A2 (en) * 1981-12-19 1983-06-29 Nippon Acchakutanshi Seizo Kabushiki Kaisha Multi-contact connector
US4699441A (en) * 1984-09-14 1987-10-13 Amp Incorporated Electrical connector for stranded wires
EP0262775A1 (en) * 1986-09-30 1988-04-06 The Whitaker Corporation Electrical connector
US4840578A (en) * 1986-10-30 1989-06-20 Hirose Electric Co., Ltd. Electrical contact
EP0321285A1 (en) * 1987-12-17 1989-06-21 The Whitaker Corporation Bidirectional insulation displacement electrical contact terminal

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269700A (en) * 1991-05-02 1993-12-14 E. I. Du Pont De Nemours And Company Insulation displacement contact terminal
US5643004A (en) * 1992-09-04 1997-07-01 Quante Aktiengesellschaft Electric connection contact in a single piece
US5769654A (en) * 1994-06-29 1998-06-23 Yazaki Corporation Press-connecting terminal
US5743617A (en) * 1995-01-20 1998-04-28 Koito Manufacturing Co., Ltd. Vehicular lamp
US5818142A (en) * 1995-07-27 1998-10-06 Black & Decker Inc. Motor pack armature support with brush holder assembly
US20170256868A1 (en) * 2012-02-07 2017-09-07 3M Innovative Properties Company Electrical connector contact terminal
US9876285B2 (en) * 2012-02-07 2018-01-23 3M Innovative Properties Company Electrical connector contact terminal
US10290954B2 (en) 2012-02-07 2019-05-14 3M Innovative Properties Company Electrical connector contact terminal

Also Published As

Publication number Publication date
AU624563B2 (en) 1992-06-11
SG153994G (en) 1995-03-17
EP0405630B1 (en) 1994-09-14
JP2875352B2 (en) 1999-03-31
HK145494A (en) 1994-12-30
CN1048124A (en) 1990-12-26
EP0405630A1 (en) 1991-01-02
ATE111640T1 (en) 1994-09-15
AU5693490A (en) 1990-12-13
DE69012453T2 (en) 1995-06-14
NL8901477A (en) 1991-01-02
JPH0325867A (en) 1991-02-04
DE69012453D1 (en) 1994-10-20
CA2018106A1 (en) 1990-12-09

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AS Assignment

Owner name: E.I. DU PONT DE NEMOURS AND COMPANY, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:VAN ZANTEN, ALBERTUS;VAN WOENSEL, JOHANNES M. B.;REEL/FRAME:005405/0443

Effective date: 19900323

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Owner name: CHEMICAL BANK, NEW YORK

Free format text: SECURITY INTEREST;ASSIGNOR:BERG TECHNOLOGY, INC.;REEL/FRAME:006497/0231

Effective date: 19930226

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Effective date: 19941209

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Effective date: 20030820

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362